For the Kursaal Concert Hall and Convention Center in San Sebastian, Spain, Moneo approached the project as one in which "singular geographic conditions demand an intuitive architectural response." This is one of the architect's best known projects, completed in 1999: two skewed and sloping cubes sit atop a plinth by the mouth of the Urumea River overlooking San Sebastian Bay. Moneo "deliberately strove to avoid a conventional architectural solution ... [and] avoid any reference to the existing urban fabric. Thus two cubes emerged, two abstract volumes capable of fulfilling the program [and] fitting into the landscape."